Surfaces and Interfaces最新文献

Assembly of artificial photo-enzyme coupling nanoreactor for boosting photodegradation of trace bisphenol A pollutant in water 组装人工光酶耦合纳米反应器，促进水中痕量双酚 A 污染物的光降解

IF 5.7 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2024-09-24 DOI: 10.1016/j.surfin.2024.105171

It is a difficult issue to remove the trace persistent organic phenolic pollutants in water. Herein, a new artificial horseradish peroxidase (HRP)/hierarchical carbon nitride (HCN) photo-enzyme coupling nanoreactor is assembled by immobilizing HRP on HCN, which achieves the high-efficiency degradation performance for trace bisphenol A (BPA) in water. Besides the promoted charge separation efficiency as well as visible light harvest capacity, the hollow and abundant pores structure of HCN/HRP can provide a confinement effect and molecular diffusion channels to promote photo-enzyme synergic catalytic effect, thus boosting degradation reaction of BPA. Compared with original HCN, the optimal HCN/HRP-3 sample obtain a higher degradation rate of 0.0575 min⁻¹, which is 3.60 and 125 times as large as that over original HCN (0.016 min⁻¹) and HRP (0.00046 min⁻¹), respectively. Meanwhile, the mineralization ability of the HCN/HRP photo-enzyme coupling nanoreactor is enhanced dramatically owing to the far higher TOC removal efficiency of BPA with 81.05 % within 60 min than original HCN (37.63 %). The photocatalytic reaction mechanism investigations demonstrate that h⁺, •O₂⁻ and •OH all take part in the degradation process of BPA and the importance order of h⁺ > •O₂⁻ > •OH. This work provides an innovative design philosophy for the assembly of photo-enzyme synergic catalytic system to effectively remove the organic pollutants in water.

去除水中的痕量持久性有机酚类污染物是一个难题。本文通过将辣根过氧化物酶（HRP）固定在氮化萘（HCN）上，组装了一种新型人工辣根过氧化物酶（HRP）/氮化萘（HCN）光酶耦合纳米反应器，实现了对水中痕量双酚 A（BPA）的高效降解。除了提高电荷分离效率和可见光捕获能力外，HCN/HRP 中空且丰富的孔隙结构还能提供封闭效应和分子扩散通道，促进光酶协同催化效应，从而促进双酚 A 的降解反应。与原始 HCN 相比，最佳 HCN/HRP-3 样品的降解速率高达 0.0575 min-1，分别是原始 HCN（0.016 min-1）和 HRP（0.00046 min-1）的 3.60 倍和 125 倍。同时，HCN/HRP 光酶偶联纳米反应器的矿化能力显著增强，60 分钟内对双酚 A 的 TOC 去除率高达 81.05%，远高于原始 HCN（37.63%）。光催化反应机理研究表明，h+、-O2-和-OH 都参与了双酚 A 的降解过程，其重要程度依次为 h+ > -O2- > -OH。这项工作为组装光酶协同催化系统以有效去除水中的有机污染物提供了一种创新的设计理念。

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引用次数: 0

Adsorption ability of sugar scum as industrial waste for crystal violet elimination: Experimental and advanced statistical physics modeling 工业废渣糖渣对消除结晶紫的吸附能力：实验和高级统计物理模型

IF 5.7 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2024-09-24 DOI: 10.1016/j.surfin.2024.105166

Recycling solid industrial waste into useful resources is the most critical aspect of managing waste. Herein, for detoxifying poisonous crystal violet dye (CV) in aqueous media, sugar scum (SS) as an underutilized industrial discard has been tested as a promising adsorbent.

The SS was thoroughly analyzed beforehand and after the adsorption process through various characterization techniques. Several operational factors, including pH, biosorbent dosage, dye concentration, and temperature, were optimized, reaching 24 mg.g^-1 at (pH 10, 2 g.L⁻¹ of SS, 10 mg.L⁻¹ of CV and 25 °C). The bioadsorbent's performance was assessed through a range of studies involving kinetic, equilibrium (using both conventional and statistical physics models), and thermodynamic investigations.

Based on the results, the equilibrium curves best fit the Freundlich model, indicating that multilayer adsorption occurs on a heterogeneous active sites surface. The statistical physics models provided detailed physiochemical insights, the double-layer with two energies model was most accurately describing the data, with a high saturation capability of 371 mg.g⁻¹. Most interactions occur at a single adsorption site (70 %), with the remaining 30 % at two sites, involving both parallel and non-parallel orientations. The mesoporous structure of the SS surface provides an optimum size for CV adsorption. Pore filling, Van der Waals forces, hydrogen bonding, π-π and electrostatic interactions are proposed as the possible mechanisms in the CV-SS system. Thermodynamic measurements indicate that CV adsorption is spontaneous (ΔG° < 0) and exothermic ΔH° (− 41.390 kJ mol⁻¹).

The SS recyclability was assessed, exhibiting encouraging sustainability with a slight fall in effectiveness (∼7 %) after 5 sequential usages. Altogether, this study makes a substantial contribution to the promotion of ecological water treatment strategies, which highlights the utility of using SS as an environmental alternative to water contaminant remediation.

将固体工业废物回收利用为有用资源是废物管理中最关键的一环。在此，为了解毒水介质中的有毒结晶紫染料（CV），糖渣（SS）作为一种未充分利用的工业废弃物，被测试为一种有前途的吸附剂。对几个操作因素进行了优化，包括 pH 值、生物吸附剂用量、染料浓度和温度，在（pH 值 10、2 g.L-1 的 SS、10 mg.L-1 的 CV 和 25 °C）条件下，吸附量达到 24 mg.g-1。生物吸附剂的性能通过一系列研究进行了评估，包括动力学、平衡（使用传统物理模型和统计物理模型）和热力学研究。统计物理模型提供了详细的物理化学见解，具有两种能量的双层模型最准确地描述了数据，其饱和能力高达 371 mg.g-1。大多数相互作用发生在单个吸附位点（70%），其余 30% 发生在两个位点，涉及平行和非平行取向。SS 表面的介孔结构为 CV 吸附提供了最佳尺寸。孔隙填充、范德华力、氢键、π-π 和静电相互作用被认为是 CV-SS 系统的可能机制。热力学测量结果表明，CV 吸附是自发的（ΔG° <0），ΔH° 是放热的（- 41.390 kJ mol-1）。总之，这项研究为推广生态水处理策略做出了重大贡献，突出了使用固态金属作为水污染物修复的环境替代品的实用性。

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引用次数: 0

Protein assay and immunoassay based on nematic thermotropic and lyotropic liquid crystals quantitated by haze measurement 基于向列各向同性和向列各向异性液晶的蛋白质检测和免疫测定，通过雾度测量进行定量

IF 5.7 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2024-09-24 DOI: 10.1016/j.surfin.2024.105143

Haze measurement is the cornerstone for assessing the transparency or opaqueness of liquid crystals (LCs) in applications such as smart windows and display technologies. In this study, we present a novel application of haze measurement as the quantitative approach for LC-based biosensing. Protein assay with bovine serum albumin (BSA) as the protein standard and immunoassay of the cancer biomarker CA125 were performed with the thermotropic LC 5CB and the nematic phase of the lyotropic chromonic LC sunset yellow. We observed that the brightness of LC optical texture increased with increasing analyte concentration due to enhanced light leakage caused by the attenuation of the vertical anchoring force of the surface alignment reagent coated on the glass surface. On the other hand, the haze value decreased as the amount of BSA or CA125 at the LC–glass interface increased, indicating that the scattering angle of the incident light was reduced. By calculating the percent difference in haze value, W (%), which gave rise to a positive correlation between the result of haze analysis and analyte concentration, a limit of detection (LOD) of 1.2 × 10⁻³ and 5.6 × 10⁻⁵ g/mL for BSA and CA125, respectively, was achieved by detection with 5CB, whereas the LOD values for BSA and CA125 were 1.0 × 10⁻¹² and 1.9 × 10⁻⁹ g/mL, respectively, when detected with nematic sunset yellow. To the best of our knowledge, this study provides the first demonstration of the feasibility and simplicity of quantitative analysis by haze measurement in LC-based biosensing.

在智能窗户和显示技术等应用中，雾度测量是评估液晶透明度或不透明性的基石。在本研究中，我们介绍了雾度测量作为液晶生物传感定量方法的新应用。以牛血清白蛋白（BSA）为蛋白质标准进行了蛋白质测定，并使用热致性 LC 5CB 和向列相的溶致性色度 LC 日落黄进行了癌症生物标记物 CA125 的免疫测定。我们观察到，LC 光学纹理的亮度随着分析物浓度的增加而增加，这是由于涂覆在玻璃表面的表面配准试剂的垂直锚定力衰减导致漏光增强。另一方面，随着液相色谱-玻璃界面上 BSA 或 CA125 含量的增加，雾度值降低，这表明入射光的散射角减小。通过计算雾度值差异的百分比 W (%)（雾度分析结果与分析物浓度之间呈正相关），用 5CB 检测 BSA 和 CA125 的检测限 (LOD) 分别为 1.2 × 10-3 和 5.6 × 10-5 g/mL，而用向日葵黄检测 BSA 和 CA125 的检测限值分别为 1.0 × 10-12 和 1.9 × 10-9 g/mL。据我们所知，这项研究首次证明了在基于液相色谱的生物传感中通过雾度测量进行定量分析的可行性和简便性。

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引用次数: 0

Microstructural design of crown nanopores in graphene membrane for efficient desalination process 用于高效海水淡化工艺的石墨烯膜冠纳米孔微结构设计

IF 5.7 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2024-09-24 DOI: 10.1016/j.surfin.2024.105167

Designing a membrane with simultaneous high water permeability and desalination rate to overcome the trade-off presents a persistent and substantial challenge. In this paper, we employed molecular dynamics simulations to design the structure of the graphene crown ether reverse osmosis membrane and elucidate the relationship between the membrane's microscopic separation mechanism and its structure-activity.

The results show that the water permeability through crown graphene nanopores exceeded that of the original graphene nanopores by an order of magnitude, and hundreds of times greater than that of the traditional reverse osmosis membrane. Additionally, the water permeation in multilayer crown graphene nanopores also surpassed that in monolayer original graphene nanopores. The water permeability exceeds 46.73 L/cm²/day/Mpa with 100 % salt rejection. Furthermore, the various sizes and shapes of graphene nanopores significantly influence water permeation. Within crown graphene nanopores, a narrow pore enables superior water permeation and salt rejection compared to a circular shape, unlike original graphene nanopores. Observed from MD simulation trajectories,this highly water permeation is caused by the hydrogen bonding between crown ether graphene and water molecules. First-principle calculations further confirm that water transport in graphene crown ether is energetically more favorable than in original graphene nanopores. Our findings support crown graphene membranes as promising candidates for seawater desalination.

设计一种同时具有高透水率和脱盐率的膜来克服这一权衡问题是一项长期而艰巨的挑战。本文采用分子动力学模拟设计了石墨烯冠醚反渗透膜的结构，并阐明了膜的微观分离机理与其结构-活性之间的关系。结果表明，冠层石墨烯纳米孔的透水性超过了原始石墨烯纳米孔的透水性一个数量级，是传统反渗透膜的数百倍。此外，多层冠状石墨烯纳米孔的透水性也超过了单层原始石墨烯纳米孔。透水率超过 46.73 升/平方厘米/天/兆帕，盐排斥率达 100%。此外，不同尺寸和形状的石墨烯纳米孔对透水性也有显著影响。与原始石墨烯纳米孔不同，在冠状石墨烯纳米孔中，与圆形相比，窄孔具有更佳的透水性和盐排斥性。根据 MD 模拟轨迹观察，这种高透水性是由冠醚石墨烯与水分子之间的氢键作用造成的。第一原理计算进一步证实，与原始石墨烯纳米孔相比，水在石墨烯冠醚中的传输在能量上更为有利。我们的研究结果支持冠醚石墨烯膜成为海水淡化的理想候选材料。

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引用次数: 0

Investigation of magnetocapacitance and magnetoconductivity in single-phase Y-Type hexaferrite Ba2Co2Fe12O22 nanoparticles 单相 Y 型六铁 Ba2Co2Fe12O22 纳米粒子的磁电容和磁导率研究

IF 5.7 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2024-09-23 DOI: 10.1016/j.surfin.2024.105162

This research paper examines the synthesis and characterization of Y-type hexaferrite Ba₂Co₂Fe₁₂O₂₂ nanoparticles produced using the sol-gel method. The study explores their structural, magnetic, and electrical properties, confirming the successful synthesis of pure-phase hexaferrites with a hexagonal structure at an annealing temperature of 1150 °C. Morphological analysis reveals changes in nanoparticle diameter based on varying annealing temperatures. The Ba₂Co₂Fe₁₂O₂₂ nanoparticles display soft ferrimagnetism, achieving a peak saturation magnetization of 52.31 emu/g at 1150 °C, along with notable magnetocrystalline anisotropy and anisotropy field. Investigations on magnetocapacitance and magnetoconductivity under magnetic fields revealed improved performance, with high magnetocapacitance (MC%) and magnetoconductivity (Mσ_AC%) percentages of 24 % and 21 %, respectively. This suggests the potential utility of these nanoparticles in applications such as permanent magnets, magnetic recording media, and spintronic devices.

本研究论文探讨了利用溶胶-凝胶法生产的 Y 型六方铁氧体 Ba2Co2Fe12O22 纳米粒子的合成和特性。研究探讨了它们的结构、磁性和电性，证实了在 1150 °C 退火温度下成功合成了具有六边形结构的纯相六方铁氧体。形态分析表明，不同的退火温度会导致纳米粒子直径发生变化。Ba2Co2Fe12O22 纳米粒子显示出软铁磁性，在 1150 ℃ 时达到 52.31 emu/g 的饱和磁化峰值，同时具有显著的磁晶各向异性和各向异性场。对磁场下的磁电容和磁导率的研究表明，这种纳米材料的性能有所提高，磁电容（MC%）和磁导率（MσAC%）分别达到 24% 和 21%。这表明这些纳米粒子在永磁体、磁记录介质和自旋电子器件等应用中具有潜在的实用性。

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引用次数: 0

Enhancing spontaneous and continuous liquid directional transport on peristome-mimetic surface with hierarchical microgrooves 在具有分层微槽的仿蠕动体表面上增强自发和连续的液体定向传输

IF 5.7 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2024-09-23 DOI: 10.1016/j.surfin.2024.105111

Directional liquid transport function discovered on the peristome of Nepenthes alata has attracted considerable attention for its diverse potential applications. Despite the extensive efforts made for the peristome-mimetic surface fabrication and the anisotropic liquid spreading regulation, it remains a daunting challenge to reveal the synergistic effect of hierarchical structures on the liquid spreading and pinning dynamics. Here, we demonstrate the first-tier microgroove morphology, as well as the presence of second-tier microgrooves, play an important role in homogenous film formation and the directional liquid transport control. Through experimental investigation and theoretical analysis, the enhanced spreading and pinning effect is validated. Moreover, the preferential directional liquid spreading will collapse on the peristome-mimetic surface without a rational parameter design, and the threshold value for the transition of liquid propagation dynamics is determined. Spontaneous directional liquid transport from the cold region to the hot region and smart liquid transport regulation was also realized on the peristome-mimetic surface. This work will provide guidance to the design of effective open microfluidic systems, and open a new way for thermal management and lab-on-chip applications.

在尼泊尔胡颓子（Nepenthes alata）围体上发现的定向液体传输功能因其多种潜在应用而备受关注。尽管在仿生包膜表面制造和各向异性液体铺展调节方面做出了大量努力，但要揭示分层结构对液体铺展和钉扎动力学的协同效应仍是一项艰巨的挑战。在此，我们证明了第一层微凹槽形态以及第二层微凹槽的存在在均质薄膜形成和定向液体传输控制中的重要作用。通过实验研究和理论分析，增强的铺展和针刺效应得到了验证。此外，在没有合理参数设计的情况下，液体优先定向扩散会在周室模拟表面上崩溃，并确定了液体传播动力学转变的临界值。在仿活塞表面上还实现了液体从冷区向热区的自发定向传输和智能液体传输调节。这项工作将为设计有效的开放式微流控系统提供指导，并为热管理和片上实验室应用开辟一条新途径。

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引用次数: 0

Construction of a superhydrophobic surface with long-term durability on 5052 Aluminium for corrosion protection 在 5052 铝材上构建具有长期耐久性的超疏水表面，以提供防腐蚀保护

IF 5.7 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2024-09-23 DOI: 10.1016/j.surfin.2024.105159

Superhydrophobic surfaces have been demonstrated to offer exceptional corrosion protection for metal surfaces. However, long-term stability issues have plagued superhydrophobic surfaces. In this study, a durable superhydrophobic surface on aluminum (SHC-Al) was created using etching combined with anodizing followed by polydimethylsiloxane (PDMS) modification. To optimize the multi-scale rough structures, the optimal anodizing conditions were explored in detail. The superhydrophobic surfaces were analyzed using Field emission scanning electron microscopy (FESEM), Confocal laser microscopy (CLSM), X-ray energy spectrometry (EDS), Fourier transform infrared spectrometry (FTIR), X-ray photoelectron spectroscopy (XPS), contact angle (CA) measurements, stability tests, and electrochemical analysis. The results reveal the successful preparation of a nest-like micro-nano composite structure on metal surface, and the contact and sliding angles of SHC-Al were measured at 157.6° and 6°, demonstrating the formation of excellent superhydrophobic surface. Electrochemical tests showed a corrosion current density of only 1.38 × 10^–9 A∙cm^-2 for SHC-Al, with a corrosion inhibition efficiency of 99.97 %, highlighting its outstanding anti-corrosion performance. Furthermore, stability tests demonstrated the SHC-Al surface had long-term durability. This study not only provides new evidence for the preparation of long-lasting superhydrophobic surfaces, but also provides a new solution for the practical application of superhydrophobic surfaces.

事实证明，超疏水表面可为金属表面提供卓越的防腐蚀保护。然而，长期稳定性问题一直困扰着超疏水表面。在本研究中，利用蚀刻结合阳极氧化，然后再进行聚二甲基硅氧烷（PDMS）改性，在铝材（SHC-Al）上形成了持久的超疏水表面。为了优化多尺度粗糙结构，详细探讨了最佳阳极氧化条件。使用场发射扫描电子显微镜（FESEM）、共聚焦激光显微镜（CLSM）、X 射线能谱仪（EDS）、傅立叶变换红外光谱仪（FTIR）、X 射线光电子能谱仪（XPS）、接触角（CA）测量、稳定性测试和电化学分析对超疏水表面进行了分析。结果表明，在金属表面成功制备了巢状微纳复合结构，并测量出 SHC-Al 的接触角和滑动角分别为 157.6°和 6°，表明形成了优异的超疏水表面。电化学测试表明，SHC-Al 的腐蚀电流密度仅为 1.38 × 10-9 A∙cm-2，缓蚀效率高达 99.97%，凸显了其卓越的抗腐蚀性能。此外，稳定性测试表明 SHC-Al 表面具有长期耐久性。这项研究不仅为制备长效超疏水表面提供了新的证据，也为超疏水表面的实际应用提供了新的解决方案。

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引用次数: 0

Photofunctional gold nanocluster-based nanocomposite coating for enhancing anti-biofouling and anti-icing properties of flexible films 基于光功能金纳米簇的纳米复合涂层，用于增强柔性薄膜的防生物污损和防结冰性能

IF 5.7 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2024-09-23 DOI: 10.1016/j.surfin.2024.105161

Elastomeric materials have garnered significant attention across biomedical and industrial fields. Multifunctionality and environmental stability are essential requirements for the application of these materials. Herein, we developed photofunctional gold nanocluster-based nanocomposites (SiO₂-AuNC) and coated them on elastomeric polydimethylsiloxane (PDMS) films through one-step way to enhance anti-biofouling and anti-icing properties. The SiO₂-AuNC coating, created by immobilizing ultra-small gold nanoclusters (AuNCs) onto hydrophobic silica nanoparticles surface using a gel-sol method, forms an island-like convex structure. The immobilization significantly enhanced radiative transitions and promoted the generation of reactive oxygen species of AuNCs, which provided robust anti-biofouling property through photosensitization to the films. Meanwhile, the rigid SiO₂-AuNC nanocomposite markedly enhances the wear resistance of the films. Additionally, the hierarchical micro- and nanostructure of SiO₂-AuNC coating increases the hydrophobicity of the films, effectively preventing the aggregation of supercooled water droplets, thereby providing superior and durably anti-icing properties. This one-step coating provides a simple and effective strategy for multifunctional surface modification with nanoparticles, showing potential biomedical and industrial applications.

在生物医学和工业领域，弹性材料备受关注。多功能性和环境稳定性是这些材料应用的基本要求。在此，我们开发了基于光功能金纳米团簇的纳米复合材料（SiO2-AuNC），并通过一步法将其涂覆在弹性聚二甲基硅氧烷（PDMS）薄膜上，以增强其抗生物污损和抗结冰性能。采用凝胶溶胶法将超小型金纳米团簇（AuNCs）固定在疏水性二氧化硅纳米粒子表面，形成了SiO2-AuNC涂层，并形成了岛状凸起结构。这种固定方式大大增强了金纳米团簇的辐射跃迁，促进了活性氧的生成，通过光敏化作用使薄膜具有很强的抗生物污染性能。同时，硬质 SiO2-AuNC 纳米复合材料明显提高了薄膜的耐磨性。此外，SiO2-AuNC 涂层的分层微观和纳米结构增加了薄膜的疏水性，有效防止了过冷水滴的聚集，从而提供了卓越而持久的防冰性能。这种一步法涂层为纳米粒子的多功能表面改性提供了一种简单有效的策略，具有潜在的生物医学和工业应用前景。

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引用次数: 0

Preparation and properties of PI@Cu composite films current collectors under silver catalysis for lithium-ion batteries 银催化下用于锂离子电池的 PI@Cu 复合薄膜集流器的制备及其特性

IF 5.7 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2024-09-22 DOI: 10.1016/j.surfin.2024.105156

As a high-performance polymer, polyimide (PI) exhibits excellent mechanical properties, thermal stability, electrical insulation, and chemical stability. However, the electrically insulating properties of PI limits its application in fields that require high electrical conductivity, so surface metallization is necessary. Conventional metallization methods make it challenging to achieve PI@Cu composite films with both good electrical conductivity and excellent mechanical properties. In this paper, the alkaline hydrolysis, silver ion activation, and pre-reduction methods were employed, followed by electroless plating, to successfully prepare a tightly bonded copper cladding layer on the PI film. The lowest resistivity of the prepared PI@Cu composite film is 2.53×10^–8 Ω·m, and the area density is as low as 1.22 mg/cm². This composite film is expected to be utilized as an anode collector for lithium-ion batteries instead of pure Cu foil. Furthermore, it effectively reduces the mass ratio of inactive substances in the electrode to enhance the energy density of the battery.

作为一种高性能聚合物，聚酰亚胺（PI）具有出色的机械性能、热稳定性、电绝缘性和化学稳定性。然而，聚酰亚胺的电绝缘特性限制了它在需要高导电性的领域的应用，因此必须进行表面金属化。传统的金属化方法很难使 PI@Cu 复合薄膜同时具有良好的导电性和优异的机械性能。本文采用碱性水解、银离子活化和预还原方法，然后进行无电解电镀，成功地在 PI 薄膜上制备了紧密结合的覆铜层。制备的 PI@Cu 复合薄膜的最低电阻率为 2.53×10-8 Ω-m，面积密度低至 1.22 mg/cm2。这种复合薄膜有望取代纯铜箔，用作锂离子电池的负极集电体。此外，它还能有效降低电极中非活性物质的质量比，从而提高电池的能量密度。

引用次数: 0

Regulation of SnO2 ETL by Diphenylsulfone for highly efficient MAPbI3 based PSCs over 21.2% in open Air 二苯砜对二氧化锡 ETL 的调节，使基于 MAPbI3 的高效 PSC 在开放空气中的发光率超过 21.2

IF 5.7 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces

Pub Date : 2024-09-22 DOI: 10.1016/j.surfin.2024.105155

Non-radiative recombination due to high-density defects at the bottom of the perovskite layer and in the SnO₂ ETL layer is not favourable for charge transfer. In this work, disodium diphenylsulfone-4,4′-dichloro-3,3′-disulfonate (SDCDPS) was introduced into SnO₂ solution to prepare a high-quality pinhole-free SnO₂ film. The sulfonate of SDCDPS collaborates with diphenylsulfone to passivate uncoordinated Sn⁴⁺ in SnO₂ ETL, which will reduce the work function (W_F) in the SnO₂, increasing the conduction of SnO₂ film and reducing the charge recombination of pre-buried interface. Besides, the sulfonate and diphenysulfone groups also passivate the uncoordinated Pb²⁺ in perovskite to increase the crystallinity of perovskite and reduce non-radiative recombination. After SDCDPS modification, the power conversion efficiency of perovskite solar cells significantly increased from 18.2% to 21.2% with hysteresis factor decreasing from 10.4% to 3.35%. Also, the modified device shows well stability due to the enhancement of perovskite crystallization and the reducing defects. Under relative humidity of ∼60%, the PCE of the unencapsulated device modified by SDCDPS remains at 81% of the initial device after 720h. This work offers a dependable method for enhancing the quality of the buried interface in PSC and to pursue productive and consistent devices.

过氧化物层底部和二氧化锡 ETL 层的高密度缺陷导致的非辐射性重组不利于电荷转移。在这项工作中，将二苯基砜-4,4′-二氯-3,3′-二磺酸钠（SDCDPS）引入二氧化锡溶液，制备出了高质量的无针孔二氧化锡薄膜。SDCDPS 的磺酸盐与二苯砜协同钝化 SnO2 ETL 中未配位的 Sn4+，从而降低 SnO2 的功函数（WF），增加 SnO2 薄膜的传导性，减少预埋界面的电荷重组。此外，磺酸盐基团和二苯砜基团还能钝化包晶石中未配位的 Pb2+，从而提高包晶石的结晶度，减少非辐射重组。经过 SDCDPS 修饰后，透辉石太阳能电池的功率转换效率从 18.2% 显著提高到 21.2%，滞后因子从 10.4% 降低到 3.35%。同时，由于包晶石结晶度的提高和缺陷的减少，改性后的器件具有良好的稳定性。在相对湿度为 60% 的条件下，经过 SDCDPS 修饰的未封装器件的 PCE 在 720 小时后仍保持在初始器件的 81%。这项工作提供了一种可靠的方法来提高 PSC 中埋入界面的质量，并实现器件的高产和一致性。

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引用次数: 0